HLOOKUP

Search for a value in a horizonally-arranged data set.

Syntax:

HLOOKUP( lookup_key_value, lookup_data:Range or Array, row_index:Number {, lookup_type:Number} )

Looks up the lookup_key_value in the first row of the lookup_data range of cells (or array) and returns the corresponding value in that range of cells (or array) from the row specified by row_index.

lookup_data must be a horizontally-arranged sorted set of data (a range of cells, or an array).

row_index=1 would return a value obtained from the first row in the lookup_data, row_index=2 would return a value obtained from the second row, and so on.

The lookup process is controlled by the optional lookup_type:

lookup_type  HLOOKUP action
1 (or omitted) HLOOKUP finds the largest value which is less than or equal to
lookup_key_value.
NB lookup_data must be sorted in ascending order
(largest values at the right).
0 HLOOKUP finds the value which exactly matches lookup_key_value.
-1 HLOOKUP finds the smallest value which is greater than or equal to
lookup_key_value.
NB lookup_data must be sorted in descending order
(largest values at the left).